R01-B1.zip (7.2 MB)
I have modified BIOS last year(first time i mod this machine was 2020, and in 2023 i made this bios mod again). it have some modification for myself.
not based on your dump. seems your dump is the same as official one.
dram spd write → true
launch csm → never
ac resume → off
gfx low power mode → disabled
render standby → disabled
and unhide menus.
this bios will support all lga1151 cpu, except xeons.
and when using with cfl u0/p0/r0 stepping, please do pin mod.
if want use xeon or bga1440 cpu, please set offset 0x102 from 0x90 to 0x91, then these cpu will work, and Intel ME will be partially shutdown. so Intel ME related stuff will not work at that situation. such as HDCP, Intel PTT(fTPM), Intel TXT, Intel SGX, resume from sleep under hackintosh using igpu, etc.
sorry for my capacity, it can not support bga1440 10th gen cpu(cpuid a0652). but 6th-9th gen work.
perhaps my machine have a hardware issue so that all my 3 audio jack dont work.
the acer C650/N4640G with LGA1151/Skylake/ALC233, have R01-xx original bios, should compatible with this bios, whatever 65w/90w/135w.